Plz urgent help needed - ( regard provisional roll no)

i have alloted provisional exams roll no. and admite card. so i have received letter from ICAI. There requirement is to resubmit the form regarding serving of last 12 months articleship.

so my dought is that, at which place i required to send this form to ICAI at regional office or noida.

whether i required to send only this form or enclose any other document with this form.

plz help urgenly i required to send this form before 15 dec.